1 / 33

Pengantar Teknologi Informasi

Pengantar Teknologi Informasi. Media Penyimpanan Sekunder. Peng ertian. Storage : tempat penyimpanan Secondary Storage Storage Media. Tujuan. Menyimpan data dan program : Permanen, tidak tergantung pada catu daya Backup, cadangan, keamanan Distribusi, memindahkan. Representasi Data.

raphael-powell
Download Presentation

Pengantar Teknologi Informasi

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Pengantar Teknologi Informasi Media PenyimpananSekunder

  2. Pengertian Storage : tempat penyimpanan Secondary Storage Storage Media

  3. Tujuan • Menyimpan data dan program : • Permanen, tidak tergantung pada catu daya • Backup, cadangan, keamanan • Distribusi, memindahkan

  4. Representasi Data • Standard representasi: • ASCII • EBCDIC • UNICODE

  5. ASCII

  6. Representasi biner • Biner: • data disimpan sebagai state • ON = 1 • OFF = 0

  7. Standard • Jika • 1 huruf diwakili 1 char, dan • 1 char ASCII-8 memerlukan tempat penyimpanan 8 bit (=1 byte), • maka berapakah tempat untuk menyimpan “TE ITP PADANG” ? • Berapa memory untuk menyimpan “TE ITP PADANG” dalam UNICODE? • Jumlah kode • ASCII = American Standard Code for Information Interchange; ASCII-8 : 8 bit = 256 chars (0-255) • EBCDIC = Extended Binary Coded Decimal Interchange Code; 256 chars • UNICODE; 65536

  8. Satuan bites? • 1 Byte = 8 bit • 1 Kilobyte (KB) = 1024 Byte • 1 Megabyte (MB)=1024 KB • 1 Gigabyte (GB) = 1024 MB • 1 Terabyte (TB) = 1024 GB 1 MegaByte = 1,024 x 1,024 Bytes 1 MegaByte = 1,048,576 Bytes Kb = Kilobits KB = KiloBytes

  9. Jenis • Media penyimpanan: • Magnetic • Optical disk • (Removable) Solid-state Storage Device

  10. Magnetic • Magnetic Tape • Sequential Access Storage Device (SASD) • Magnetic Disk • Direct Access Storage Device (DASD)

  11. Magnetic Tape • Sequential Access Storage Device (SASD) • Makin jarangdigunakan, tapimasihadadipakai untuk backup

  12. Magnetic Disk • Floppy disk (diskette) • Hard disk

  13. Magnetic Disk: diskette • Bahan • Bagian • Track • Sector

  14. Floppy Disk (1) • Ukuran

  15. Floppy Disk (2) • Formatting • Soft-sector • Hard-sector • Kepadatan rekam • Single Density • Double Density • Quad Density • High Density • Sisi rekam • Single Side • Double Side

  16. Floppy Disk (3) • Cluster : beberapa sector sebagai satu blok data • Seandainya 1 cluster = 4 KB, maka • File 3 KB memerlukan 1 cluster (4 KB) • File 5 KB memerlukan 2 cluster (8 KB) • Standard: • FAT16 (DOS, Win31, Win95) = 32 KB • FAT32 (Win98, XP) = 4 KB

  17. Floppy Disk (3a) • Diketahui disket, free space 100 KB • Seandainya 1 cluster = 4 KB • Disimpan file ukuran 5 KB • Free space saat ini menjadi: 92 KB

  18. Floppy Disk (4) • High-capacity floppy disk • Zipdisk (Iomega) • Superdisk (Imation) • HiFD disk (Sony)

  19. Hard Disk (1)

  20. Hard Disk (2) • Seperti floppy

  21. Hard Disk (3) • Seperti floppy, bahan logam

  22. Hard Disk (4) • Seperti floppy, • Beberapa piringan, cylinder

  23. Hard disk (5) Mana yang lebihbaik? Speed: rotations per minute (rpm) Capacity: Giga Byte (GB) Transfer rate: Mega bit per second (Mbps) Controller: IDE, ATA, EIDE ...

  24. Hard disk (6) : varian Removable hard disk Redundant Array of Inexpensive Disks (RAID) Small Computer System Interface (SCSI)

  25. Hard disk, removable • bracket • USB v1.1 data transfer 12Mbits/sec. • Compatible with almost every 2,5" hdd. • Hot swappable function. Included Win98/98se driver. Works without driver direct with Win ME/2000/XP, linux.

  26. Hard Disk : raid 5 • RAID standard: • High capacity: dua harddisk atau lebih diperlakukan sebagai 1 harddisk • Mirroring: menulis data yang sama ke mirror (sbg cadangan) • Fault tolerant: toleran terhadap kegagalan. • Stripping: penyimpanan menyebar sehingga akses lebih cepat.

  27. Optical Disk

  28. Optical Disk • ROM : Read Only Memory • WORM : Write Once, Read Many • CD-Recordable (CDR) • Menulis CD dengan cara membakar (burn) permukaan piringan • WMRM : Write Many Read Many • ReWrite CD (CDRW)

  29. Optical Disk • CD (Compact Disk) : • CD-ROM • CD-R • CD-RW • mini-CD • DVD (Digital Video Disk, Digital Versatile Disk) : • DVD-ROM • DVD-R • DVD-RAM

  30. CD • Format: CD-Audio, CD-ROM (ISO), VCD, SVCD, CD-I, .. • Kapasitas: • Mini CD: 200 MB • CD : 650 – 700 MB • DVD : 4.7 GB – 17 GB • Transfer rate: • CD drive : 1x = 150 KBps • DVD drive: 1x = 1.32 MBps

  31. Fluorescent Multilayer Disk • Capacity : 20 GB – 140 GB • Transfer rate : 1 GBps

  32. Solid State

  33. Holographic

More Related